109187 has 8 divisors (see below), whose sum is σ = 121296. Its totient is φ = 97632.

The previous prime is 109171. The next prime is 109199. The reversal of 109187 is 781901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109187 - 2⁴ = 109171 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109187.

It is not an unprimeable number, because it can be changed into a prime (109147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368 + ... + 594.

It is an arithmetic number, because the mean of its divisors is an integer number (15162).

2¹⁰⁹¹⁸⁷ is an apocalyptic number.

109187 is a deficient number, since it is larger than the sum of its proper divisors (12109).

109187 is a wasteful number, since it uses less digits than its factorization.

109187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 109187 is about 330.4345623569. The cubic root of 109187 is about 47.7958633932.

The spelling of 109187 in words is "one hundred nine thousand, one hundred eighty-seven".